Interesting Superman masked his powers as humble Clark Kent. And everyone around him did not know who he was—except his adopted folks.
Another parallel.
And the time the series was created, the Bible was more well known and accepted in our society. Perhaps, much of the inspiration came unconsciously from a biblical worldview.
That is a possibility. If one looks at pre-1960’s literature (especially 19th Century novels), Biblical references are ubiquitous.